Abstract
An equation for shear force-slip relationship including residual slip and ultimate slip of shear connector is necessary to rational design of composite structures. Shear force-slip relationship of the headed stud connectors is generally obtained by a pushout test. It has been cralified that external force in the axial direction of stud affects to the shear force-slip relationship. However, effect of restriction to concrete block in the pushout test on that relationship has not been cralified. Therefore, a pushoff test and pushout tests in which restrict condition of concrete block is changed were carried out in this research. Experimental results made it clear that difference of test method affects to not only shear strength but also load-slip relationship. Behaviors of axial direction of stud depending on the test method can be explained by a proposed wedge concrete model.
